Jump to content

NTP pool: Difference between revisions

From Wikipedia, the free encyclopedia
Browse history interactively
← Previous editNext edit →
Content deleted Content added
VisualWikitext
typos
some work on the references
Line 1: Line 1:
⚫
{{Internet-stub}}

{{Infobox website
{{Infobox website
|name = NTP pool
|name = NTP pool
Line 16: Line 18:
|owner =
|owner =
|author =
|author =
|launch date = {{Start date and age|2003}}<ref>
|launch date = {{Start date and age|2003}}<ref>{{cite web |url=http://www.pool.ntp.org/en/vendors.html#ntp-pool-offer |title=What the NTP Pool can offer |accessdate=April 29, 2011}}</ref>
{{cite web |url=http://www.pool.ntp.org/en/vendors.html#ntp-pool-offer |title=What the NTP Pool can offer |author= |date= |work= |publisher= |accessdate=29 April 2011}}</ref>
|alexa =
|alexa =
|revenue =
|revenue =
Line 26: Line 27:
The '''NTP pool''' is a dynamic collection of networked [[computer]]s that volunteer to provide highly accurate [[time]] via the [[Network Time Protocol]] to clients worldwide. The machines that are "in the pool" are part of the ''pool.ntp.org'' [[Domain Name System|domain]] as well as of several [[subdomain]]s divided by [[geographical zone]] and are distributed to NTP clients via [[round robin DNS]]. Work is being done to make the geographic zone selection unnecessary, via customized authoritative DNS servers that utilize [[geolocation software]].
The '''NTP pool''' is a dynamic collection of networked [[computer]]s that volunteer to provide highly accurate [[time]] via the [[Network Time Protocol]] to clients worldwide. The machines that are "in the pool" are part of the ''pool.ntp.org'' [[Domain Name System|domain]] as well as of several [[subdomain]]s divided by [[geographical zone]] and are distributed to NTP clients via [[round robin DNS]]. Work is being done to make the geographic zone selection unnecessary, via customized authoritative DNS servers that utilize [[geolocation software]].


{{As of|2013|1}} the pool consists of about 3160 active time servers on IPv4 and 730 servers on IPv6.<ref>[http://www.pool.ntp.org/zone/ NTP Servers in All Pool Servers] viewed Jan 18, 2013 at 16:49Z</ref> Because of the [[decentralization]] of this project accurate statistics on the number of clients cannot be obtained, but according to the project's website the pool provides time to between five and 15 million systems.<ref>[http://www.pool.ntp.org/en/vendors.html#pool-capacity Pool Capacity]</ref> Because of client growth the project is in perpetual need of more servers.<ref>[http://news.ntppool.org/2009/08/yes-the-pool-needs-more-server.html The pool needs more servers]</ref><ref>{{cite news | url = http://it.slashdot.org/article.pl?sid=07/09/08/1840255 | title = NTP Pool Reaches 1000 Servers, Needs More | publisher = Slashdot | date = September 8, 2007}}</ref><ref>{{cite news | url = http://www.theinquirer.net/inquirer/news/956/1035956/network-time-pool-tops-1000-servers | title = Network time pool tops 1,000 servers: But still looking for volunteers | date = 9 September 2007 | author = Egan Orion | publisher = The Inquirer}}</ref>
{{As of|2013|1}} the pool consists of about 3160 active time servers on IPv4 and 730 servers on IPv6.<ref>{{cite web |url=http://www.pool.ntp.org/zone |title=All Pool Servers |accessdate=January 18, 2013}}</ref> Because of the [[decentralization]] of this project accurate statistics on the number of clients cannot be obtained, but according to the project's website the pool provides time to between five and 15 million systems.<ref>{{cite web |url=http://www.pool.ntp.org/en/vendors.html#pool-capacity |title=Pool Capacity |accessdate=March 29, 2011}}</ref> Because of client growth the project is in perpetual need of more servers.<ref>[http://news.ntppool.org/2006/01/reached-500-servers-welcome-sl.html "Reached 500 servers - Welcome Slashdot"]. Ask Bjørn Hansen. January 15, 2006.</ref><ref>[http://news.ntppool.org/2009/08/yes-the-pool-needs-more-server.html "Yes, the pool needs more servers"]. Ask Bjørn Hansen. August 11, 2009.</ref><ref>[http://news.ntppool.org/2012/06/more-servers-please.html "The NTP Pool needs more servers"]. Ask Bjørn Hansen. June 21, 2012.</ref>


There is always a desire for more time servers, as the more time servers are in the pool, the lower the resource demand on each member. Joining the pool requires at least a [[broadband]] connection to the Internet, a static [[IP address]], and accurate time from another source (for example from another NTP server, from a [[DCF77]] receiver, [[WWVB]] receiver or a [[GPS receiver]]).
There is always a desire for more time servers, as the more time servers are in the pool, the lower the resource demand on each member. Joining the pool requires at least a [[broadband]] connection to the Internet, a static [[IP address]], and accurate time from another source (for example from another NTP server, from a [[DCF77]] receiver, [[WWVB]] receiver or a [[GPS receiver]]).


This project was started by Adrian von Bidder in January 2003 after a discussion on comp.protocols.time.ntp about abuse of the public stratum 1 servers.<ref>[http://groups.google.com/group/comp.protocols.time.ntp/browse_thread/thread/fc51c6ee6ad66f66 "Public servers abuse"]. David L. Mills. Jan 21, 2003.</ref><ref>[http://groups.google.com/group/comp.protocols.time.ntp/browse_thread/thread/71286b37b8a6089d "ntp DNS round robin experiment"]. Adrian 'Dagurashibanipal' von Bidder. Jan 27, 2003.</ref> The system has been maintained and developed by Ask Bjørn Hansen since July 2005.<ref>[http://groups.google.com/group/comp.protocols.time.ntp/browse_thread/thread/cd486a782b40f620 "The Future is Bright, The Future is ..."]. Adrian 'Dagurashibanipal' von Bidder. Jul 24, 2005.</ref>
This project was started by Adrian von Bidder in January 2003 after a discussion on comp.protocols.time.ntp about abuse of the public stratum 1 servers.<ref>[http://groups.google.com/group/comp.protocols.time.ntp/browse_thread/thread/fc51c6ee6ad66f66 "Public servers abuse"]. [[David L. Mills]]. January 21, 2003.</ref><ref>[http://groups.google.com/group/comp.protocols.time.ntp/browse_thread/thread/71286b37b8a6089d "ntp DNS round robin experiment"]. Adrian 'Dagurashibanipal' von Bidder. January 27, 2003.</ref> The system has been maintained and developed by Ask Bjørn Hansen since July 2005.<ref>[http://groups.google.com/group/comp.protocols.time.ntp/browse_thread/thread/cd486a782b40f620 "The Future is Bright, The Future is ..."]. Adrian 'Dagurashibanipal' von Bidder. July 24, 2005.</ref>


== References ==
== References ==
{{Reflist|colwidth=30em}}
{{reflist}}


== External links ==
== External links ==
Line 41: Line 42:
[[Category:Free software programmed in Perl]]
[[Category:Free software programmed in Perl]]
[[Category:Perl software]]
[[Category:Perl software]]

⚫
{{Internet-stub}}


[[de:NTP-Pool]]
[[de:NTP-Pool]]

Revision as of 02:50, 12 February 2013

Stub icon

This Internet-related article is a stub. You can help Wikipedia by expanding it.

NTP pool
URLwww.pool.ntp.org

The NTP pool is a dynamic collection of networked computers that volunteer to provide highly accurate time via the Network Time Protocol to clients worldwide. The machines that are "in the pool" are part of the pool.ntp.org domain as well as of several subdomains divided by geographical zone and are distributed to NTP clients via round robin DNS. Work is being done to make the geographic zone selection unnecessary, via customized authoritative DNS servers that utilize geolocation software.

As of January 2013 the pool consists of about 3160 active time servers on IPv4 and 730 servers on IPv6.[2] Because of the decentralization of this project accurate statistics on the number of clients cannot be obtained, but according to the project's website the pool provides time to between five and 15 million systems.[3] Because of client growth the project is in perpetual need of more servers.[4][5][6]

There is always a desire for more time servers, as the more time servers are in the pool, the lower the resource demand on each member. Joining the pool requires at least a broadband connection to the Internet, a static IP address, and accurate time from another source (for example from another NTP server, from a DCF77 receiver, WWVB receiver or a GPS receiver).

This project was started by Adrian von Bidder in January 2003 after a discussion on comp.protocols.time.ntp about abuse of the public stratum 1 servers.[7][8] The system has been maintained and developed by Ask Bjørn Hansen since July 2005.[9]

References

  1. ^ "What the NTP Pool can offer". Retrieved April 29, 2011.
  2. ^ "All Pool Servers". Retrieved January 18, 2013.
  3. ^ "Pool Capacity". Retrieved March 29, 2011.
  4. ^ "Reached 500 servers - Welcome Slashdot". Ask Bjørn Hansen. January 15, 2006.
  5. ^ "Yes, the pool needs more servers". Ask Bjørn Hansen. August 11, 2009.
  6. ^ "The NTP Pool needs more servers". Ask Bjørn Hansen. June 21, 2012.
  7. ^ "Public servers abuse". David L. Mills. January 21, 2003.
  8. ^ "ntp DNS round robin experiment". Adrian 'Dagurashibanipal' von Bidder. January 27, 2003.
  9. ^ "The Future is Bright, The Future is ...". Adrian 'Dagurashibanipal' von Bidder. July 24, 2005.

External links

Retrieved from "https://en.wikipedia.org/w/index.php?title=NTP_pool&oldid=537809147"